Title :
Modulating conductivity of Au/CNT composites in THz frequency range: A THz resistor
Author :
Polley, Debanjan ; Patra, Abani ; Barman, Anjan ; Mitra, Rajib K.
Author_Institution :
Dept. of Condensed Matter Phys. & Mater. Sci., S.N. Bose Nat. Centre for Basic Sci., Kolkata, India
Abstract :
We report the tunable conductivity of single walled carbon nanotubes and multi-walled carbon nanotubes with their surface walls decorated by Gold nanoparticles in the elusive THz frequency range (0.3-2.0 THz). Colloidal gold nanoparticles were synthesized by the reduction of gold chloride solution using tri-sodium citrate. A simple chemical route is followed to attach Au NP on the surfaces of carbon nanotubes. THz conductivity spectra are explained with the help of modified Universal Dielectric Response model.
Keywords :
carbon nanotubes; colloids; composite materials; gold; nanoparticles; resistors; terahertz wave devices; Au-C; THz conductivity spectra; THz frequency range; THz resistor; chemical route; colloidal gold nanoparticles; conductivity modulation; frequency 0.3 THz to 2.0 THz; gold chloride solution reduction; modified universal dielectric response model; multiwalled carbon nanotubes; single walled carbon nanotubes; tri-sodium citrate; tunable conductivity; Carbon nanotubes; Conductivity; Films; Gold; Nanoparticles; Optical surface waves;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6955998
